EP4272941A1 - Middle drum assembly of building drum, building drum, and method for replacing middle drum block of middle drum assembly - Google Patents

Middle drum assembly of building drum, building drum, and method for replacing middle drum block of middle drum assembly Download PDF

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Publication number
EP4272941A1
EP4272941A1 EP21914524.0A EP21914524A EP4272941A1 EP 4272941 A1 EP4272941 A1 EP 4272941A1 EP 21914524 A EP21914524 A EP 21914524A EP 4272941 A1 EP4272941 A1 EP 4272941A1
Authority
EP
European Patent Office
Prior art keywords
drum
fastener
middle drum
block
shoulder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21914524.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Xiaosong SUN
Yihang YU
Jianling SONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mesnac Co Ltd
Qingdao Mesnac Electromechanical Engineering Co Ltd
Original Assignee
Mesnac Co Ltd
Qingdao Mesnac Electromechanical Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mesnac Co Ltd, Qingdao Mesnac Electromechanical Engineering Co Ltd filed Critical Mesnac Co Ltd
Publication of EP4272941A1 publication Critical patent/EP4272941A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings

Definitions

  • the present invention relates to the technical field of tire processing, and in particular to a middle drum assembly of a building drum, and a replacement method for a middle drum block of the middle drum assembly and the building drum.
  • the length of the toothed blocks at the drum shoulder of the building drum needs to be changed according to different tire specifications.
  • Conventional the toothed blocks are connected to the toothed block connecting seat via screws. In this way, when the toothed blocks are changed, the screws need to be removed, which takes a lot of time and affects the efficiency.
  • the main purpose of the present invention is to provide a middle drum assembly of a building drum, and a replacement method for a middle drum block of the middle drum assembly and the building drum, so as to solve the problem in the prior art that the replacement of a toothed block at a drum shoulder consumes time and effort.
  • a middle drum assembly of a building drum including: a drum shoulder; a middle drum block having a mounting groove and a fixing hole; a first fastener movably disposed in the drum shoulder and capable of moving along the axial direction of the building drum, the first fastener has a step surface, and the middle drum block is abutting joint the drum shoulder in the radial direction of the building drum, the mounting groove is aligned with the first fastener, the middle drum block presses the step surface and a part of the first fastener stretches into the mounting groove; a second fastener, a part of the second fastener passing through the drum shoulder, wherein after the part of the first fastener stretches into the mounting groove, the fixing hole is aligned with the second fastener, the middle drum block is close to the drum shoulder along the axial direction of the building drum, and a part of the second fastener exposed out of the drum shoulder stretches into the fixing hole
  • the middle drum block is arc-shaped, and the mounting groove is in communication with both an inner side wall of the arc shape and an end surface of the arc shape.
  • the first fastener includes a large diameter section and a small diameter section which are sequentially connected, the step surface is formed between the large diameter section and the small diameter section, the small diameter section stretches into the drum shoulder, and the large diameter section is able to stretch into the mounting groove.
  • the mounting groove includes a diameter-expanding section and a diameter-reducing section that are sequentially communicated with each other, the diameter-reducing section is closer to an end surface of the drum shoulder than the diameter-expanding section, the large diameter section stretches into the diameter-expanding section, the small diameter section stretches into the diameter-reducing section, and the step surface abuts against an end surface of the diameter-reducing section that faces the diameter-expanding section.
  • an outer edge of the mounting groove is provided with an inclined surface, along a direction in which the middle drum block is abutting joint the drum shoulder in the radial direction of the building drum, the inclined surface is inclined in a direction away from the drum shoulder, when the middle drum block is abutting joint the drum shoulder in the radial direction of the building drum, the inclined surface presses the step surface, and enabling the first fastener to move in a direction of protruding from the drum shoulder, and to stretch into the mounting groove.
  • the middle drum assembly further including an elastic member, wherein two ends of the elastic member are respectively abutted against the drum shoulder and the first fastener, and provide with an elastic force for the first fastener moving in a direction stretching into the drum shoulder.
  • the middle drum block includes: a tooth portion located on an outer side of the middle drum block; a connecting portion located on an inner side surface of an end portion of the tooth portion, wherein the mounting groove and the fixing hole are both provided on an end surface of the connecting portion.
  • a plurality of fixing holes and a plurality of second fasteners are provided, and both sides of the mounting groove are respectively arranged on at least one fixing hole of the plurality of fixing holes.
  • the mounting groove is a U-shaped groove
  • the first fastener is a screw having a screw head
  • the second fastener is a pin
  • a building drum which includes the described middle drum assembly.
  • a replacement method for a middle drum block of a middle drum assembly includes a drum shoulder, a middle drum block, and a first fastener and a second fastener which pass through the drum shoulder, the middle drum block is provided with a mounting groove and a fixing hole, the replacement method for the middle drum block includes: the middle drum block is close to one side of a drum shoulder in the radial direction of the middle drum assembly, and forming a gap with an end surface of the drum shoulder, and then the middle drum block continuing to move towards a centre of the middle drum assembly, during a movement process, the middle drum block presses a step surface of the first fastener, such that one end of the first fastener is away from the drum shoulder and stretches into the mounting groove, when the middle drum block moves until the fixing hole is aligned with the second fastener, the middle drum block is close to the end surface of the drum shoulder along the axial direction of the middle drum assembly, a part of the first fastener
  • the first fastener includes a large diameter section and a small diameter section which are sequentially connected; the step surface is formed between the large diameter section and the small diameter section; when the middle drum block presses the step surface, the first fastener moves in a direction of protruding from the drum shoulder; and the large diameter section stretches into the mounting groove.
  • an outer edge of the mounting groove is provided with an inclined surface, and when the middle drum block continues to move towards the center of the middle drum assembly, the inclined surface presses the step surface.
  • the middle drum assembly further includes an elastic member, when the middle drum block presses the step surface, the first fastener compresses the elastic member, the length of the elastic member is shortened, and when the middle drum block is close to the end surface of the drum shoulder in the axial direction of the middle drum assembly, the first fastener releases the elastic member, and the length of the elastic member is lengthen.
  • the mounting groove and the fixing hole are provided on the middle drum block, and the first fastener and the second fastener are respectively provided with the mounting groove and the fixing hole by matching manner, wherein the first fastener and the second fastener penetrate the drum shoulder in advance.
  • the middle drum block When the middle drum block needs to be mounted, the middle drum block is pressed downwards along one side of the radial direction of the building drum close to the drum shoulder. During this process, the middle drum block compresses the step surface of the first fastener, causing the first fastener to move in a direction to extend beyond the drum shoulder.
  • One end of the first fastener is able to stretch into the mounting groove, and a distance is formed between the end surface of the middle drum block and the end surface of the drum shoulder, the distance is not less than the distance that the second fastener is exposed to the drum shoulder, so that the middle drum block is able to avoid the movement of the second fastener, when the middle drum block moves radially into place, the fixing hole is aligned with the second fastener, and at this moment, the middle drum block is axially pushed, so that the middle drum block moves in the direction of approaching the drum shoulder, and the first fastener moves in the direction of retracting the drum shoulder, at the same time, the second fastener stretches into the fixing hole, so that the radial movement of the middle drum block is locked by the second fastener, In addition, the axial movement needs an external force to pull the middle drum block, so that the middle drum block is mounted on the drum shoulder.
  • the middle drum block When the middle drum block needs to be disassembled, the middle drum block is axially pulled by an external force, so that the second fastener is separated from the fixing hole, and then the drum block is radially pulled, so that the first fastener is separated from the mounting groove, and thus the middle drum block is disassembled and replaced.
  • the above-mentioned arrangement method enables the dismounting and mounting of the middle drum block to be carried out quickly without the need of a dismounting screw, thus greatly improving the replacement efficiency; in addition, the dismounting and mounting process only needs to be carried out by one-step pressing and one-step pushing and one-step pulling and one-step lifting, so that the dismounting and mounting are convenient and time-saving and labour-saving.
  • the figures include the following reference signs: 10: Drum shoulder; 20: middle drum block; 21: mounting groove; 22: fixing hole; 23: inclined plane; 24: Tooth portion; 25: connecting portion; 30: first fastener; 40: second fastener; 50: elastic member.
  • the present invention provides a middle drum assembly of a building drum, and a replacement method for a middle drum block of the middle drum assembly and the building drum.
  • the building drum has a middle drum assembly as described below.
  • a middle drum assembly of a building drum as shown in figures 1-3 including a drum shoulder 10, a middle drum block 20, a first fastener 30 and a second fastener 40, wherein the middle drum block 20 is provided with an mounting groove 21 and a fixing hole 22; the first fastener 30 is movably disposed in the drum shoulder 10 and moved along the axial direction of the building drum; the first fastener 30 has a step surface; when the middle drum block 20 abuts against the drum shoulder 10 along the radial direction of the building drum, the mounting groove 21 is aligned with the first fastener 30; the middle drum block 20 compresses the step surface and enables a part of the first fastener 30 to stretch into the mounting groove 21; a part of the second fastener 40 passes through the drum shoulder 10.
  • the fixing hole 22 is aligned with the second fastener 40, the middle drum block 20 is close to the drum shoulder 10 along the axial direction of the building drum, and a part of the second fastener 40 exposed outside the drum shoulder 10 stretches into the fixing hole 22.
  • the mounting groove 21 and the fixing hole 22 are provided on the middle drum block 20, and the first fastening member 30 and the second fastening member 40 are provided in matching with the mounting groove 21 and the fixing hole 22, wherein the first fastening member 30 and the second fastening member 40 are pre-penetrated on the drum shoulder 10.
  • the middle drum block 20 When it is required to mount the middle drum block 20, the middle drum block 20 is firstly arranged along the radial direction of the building drum on the side close to the drum shoulder 10, pressing down the middle drum block 20, in which process, the middle drum block 20 presses the step surface of the first fastener 30, so that the first fastener 30 moves in a direction of protruding from the drum shoulder 10, One end of the first fastener 30 is able to stretch into the mounting groove 21, and a distance is formed between an end surface of the middle drum block 20 and an end surface of the drum shoulder 10, the distance is not less than the distance that the second fastener 40 is exposed to the drum shoulder 10, so that the middle drum block 20 is able to avoid the movement of the second fastener 40.
  • the fixing hole 22 is aligned with the second fastener 40, and at this time, the middle drum block 20 is axially pushed, so that the middle drum block 20 moves in a direction of approaching the drum shoulder 10, and the first fastener 30 moves in a direction of retracting the drum shoulder 10, at the same time, the second fastener 40 stretches into the fixing hole 22, such that the radial movement of the middle drum block 20 is locked by the second fastener 40.
  • the axial movement needs an external force to pull the middle drum block 20, so that the middle drum block 20 is mounted on the drum shoulder 10.
  • the middle drum block 20 When the middle drum block 20 needs to be disassembled, the middle drum block 20 is axially pulled by an external force, so that the second fastener 40 is separated from the fixing hole 22, and then the middle drum block 20 is radially pulled, so that the first fastener 30 is separated from the mounting groove 21, and then the middle drum block 20 is disassembled and replaced.
  • the above-mentioned arrangement method enables the dismounting and mounting of the middle drum block 20 without the need of a dismounting screw, so that the dismounting and mounting are performed quickly, thereby greatly improving the replacement efficiency.
  • the dismounting and mounting process only needs to be performed by one-step pressing and one-step pushing and one-step pulling and one-step lifting, so that the dismounting and mounting are convenient and time-saving and labour-saving.
  • the axial direction and the radial direction mentioned in this embodiment refer to both the axial direction and the radial direction of the building drum, and more specifically, the axial direction and the radial direction of the main shaft of the building drum.
  • the middle drum block 20 is arc-shaped, the arc-shape cooperates with other structures of the building drum, such as a backing plate and a sliding block;
  • the mounting groove 21 is in communication with both the arc-shaped inner side wall and the arc-shaped end surface; the first fastener 30 stretches into the mounting groove 21 via the arc-shaped inner side wall, and the end surface is in communication for avoiding the first fastener 30, so as to ensure that the first fastener 30 stretches into the mounting groove 21.
  • the mounting groove 21 of the present embodiment is U-shaped, and the opening side of the U-shape faces the inner side of the arc-shaped middle drum block 20.
  • the length direction of the mounting groove 21 and the fixing hole 22, and the axial direction of the first fastening member 30 and the axial direction of the second fastening member 40 are all along the axial direction of the building drum, and the sliding direction of the first fastening member 30 is also the axial direction of the building drum.
  • the first fastener 30 includes a large diameter section and a small diameter section which are connected in sequence, wherein a step surface is formed between the large diameter section and the small diameter section, the small diameter section stretches into the drum shoulder 10, and the large diameter section is able to stretch into the mounting groove 21.
  • the first fastener 30 of this embodiment uses a screw, and a screw head with a larger diameter at one end of the screw is a large diameter section, the other part of the screw is a small diameter section, the small diameter section passes through the drum shoulder 10, and the large diameter section is exposed to the drum shoulder 10, such that when the drum block 20 is pressed downwards radially, due to the large size of the large diameter section, the outer edge of the mounting groove 21 will press the step surface formed between the large diameter section and the small diameter section.
  • the first fastener 30 is pulled out of the drum shoulder 10 for a distance, and the effect of avoiding the second fastener 40 and the drum block 20 in subsequent fastening is achieved.
  • the mounting groove 21 includes a diameter-expanding section and a diameter-reducing section which are sequentially communicated, furthermore, the diameter-reducing section is closer to the end surface of the drum shoulder 10 than the diameter-expanding section, and when the drum block 20 is pressed down, the large diameter section stretches into the diameter-expanding section, the small diameter section stretches into the diameter-reducing section, such that the step surface of the first fastener 30 is able to abut against the end surface of the diameter-reducing section facing the diameter-expanding section, realizing a stop fit between the first fastener 30 and the middle drum block 20, and when the middle drum block 20 is pulled in a direction away from the drum shoulder 10, the end surface of the diameter-reducing segment is able to drive the first fastener 30 to move by pressing the step surface.
  • the outer edge of the mounting groove 21, i.e., the corner of the mounting groove 21 on the inner side of the end surface of the middle drum block 20, is provided with a inclined surface 23, furthermore, in the direction in which the drum block 20 abuts against the drum shoulder 10 in the radial direction of the building drum, the inclined surface 23 is inclined away from the drum shoulder 10. In this way, when the middle drum block 20 is pressed down, the middle drum block 20 abuts against the drum shoulder 10 in the radial direction of the building drum, the inclined surface 23 squeezes the edge of the step surface, thereby moving the first fastener 30 in a direction to protrude from the drum shoulder 10.
  • the larger diameter section of the first fastener 30 is able to stretch into the mounting groove 21.
  • the first fastener 30 is smoothly squeezed and pulled out of the first fastener 30, thereby ensuring the fluency of a pressing action.
  • the middle drum assembly further includes an elastic member 50, the elastic member 50 is a spring and is sleeved on the first fastener 30, two ends of the elastic member 50 respectively abut against the drum shoulder 10 and the first fastener 30, and provide an elastic force for the first fastener 30 to move in a direction stretching into the drum shoulder 10.
  • the elastic member 50 is a spring and is sleeved on the first fastener 30, two ends of the elastic member 50 respectively abut against the drum shoulder 10 and the first fastener 30, and provide an elastic force for the first fastener 30 to move in a direction stretching into the drum shoulder 10.
  • the stop surface keeps abutting against the middle drum block 20 all the time, and when the middle drum block 20 moves axially, the stop surface keeps moving synchronously with the first fastener 30 all the time, on the other hand, after the installation is completed, the elastic member 50 pulls the middle drum block 20 close to the drum shoulder 10 via the first fastener 30, so that the middle drum block 20 is always tightly fitted with the drum shoulder 10, and the middle drum block 20 is always in a position close to the drum shoulder 10 when no external force is applied or no external force exceeding a certain magnitude is applied.
  • the second fastening member 40 always stretches into the fixing hole 22 to ensure the stability of the middle drum block 20 after the middle drum block 20 is installed.
  • the elastic force of the spring needs to be greater than the force of the drum block 20 shaking axially when the building drum is in normal use, so that the stability of the drum block 20 is ensured when the building drum is in normal operation, so that the drum block 20 is dismounted only when the operator disassembles the drum block 20.
  • the foregoing effect may also be implemented in another manner, for example, the first fastener 30 is replaced with an elastic unit, and the foregoing effect is implemented by using the elasticity of the first fastener 30; or in other ways.
  • the middle drum block 20 in the present embodiment is a toothed block, which includes a tooth portion 24 and a connecting portion 25, in which the tooth portion 24 is located on an outer side face of the middle drum block 20 and is configured for tire processing; the connecting portion 25 is located on an inner side surface of an end portion of the tooth portion 24 and is configured to cooperate with components such as a drum shoulder 10, and the mounting groove 21 and the fixing hole 22 are both provided on an end surface of the connecting portion 25.
  • one mounting groove 21 and one first fastener 30 are provided, the two cooperate with each other, and there are a plurality of fixing holes 22 and a plurality of second fasteners 40.
  • two fixing holes 22 are provided, and at least one fixing hole 22 is provided on both sides of the mounting groove 21, so that the middle drum block 20 is subjected to a force balance, and the stability of the middle drum block 20 during normal operation of the building drum is ensured.
  • the fixing hole 22 is a blind hole
  • the second fastening member 40 is a pin with an equal diameter.
  • the present embodiment further provides a replacement method for a middle drum block of a middle drum assembly.
  • the middle drum assembly is the described middle drum assembly, including a drum shoulder 10, a middle drum block 20, and a first fastener 30 and a second fastener 40 which pass through the drum shoulder 10, the middle drum block 20 has a mounting groove 21 and a fixing hole 22.
  • the replacement method for the middle drum block 20 includes: when the middle drum block 20 is mounted, the middle drum block 20 is located on one side, close to the drum shoulder 10, in the radial direction of the middle drum assembly, and forms a gap with the end surface of the drum shoulder 10, then the middle drum block 20 continues to move towards the centre of the middle drum assembly, and during the movement, the middle drum block 20 compresses the step surface of the first fastener 30, so that one end of the first fastener 30 is away from the drum shoulder 10 and stretches into the mounting groove 21, and after the drum block 20 moves to the fixing hole 22 and is aligned with the second fastener 40, the middle drum block 20 is close to the end surface of the drum shoulder 10 in the axial direction of the middle drum assembly, and a part of the first fastener 30 retracts into the drum shoulder 10, the second fastening member 40 stretches into the fixing hole 22.
  • the described process is reversely operated.
  • the first fastening member 30 since the first fastening member 30 includes a large diameter section and a small diameter section which are sequentially connected, and a step surface is formed between the large diameter section and the small diameter section, when the middle drum block 20 presses the step surface, the first fastening member 30 moves in a direction of protruding from the drum shoulder 10 under the pressing of the middle drum block 20, and the large diameter section stretches into the mounting groove 21.
  • the outer edge of the mounting groove 21 is provided with a inclined surface 23, and when the middle drum block 20 continues to move towards the center of the middle drum assembly, the inclined surface 23 presses the step surface.
  • the middle drum assembly further includes an elastic member 50, when the middle drum block 20 presses the step surface, the first fastener 30 compresses the elastic member 50, the length of the elastic member 50 becomes shorter, and when the middle drum block 20 is close to the end surface of the drum shoulder 10 in the axial direction of the middle drum assembly, the first fastener 30 releases the elastic member 50, and the length of the elastic member 50 becomes longer.
  • the effect of limiting the axial movement of the middle bump 20 is achieved by the elastic member 50.
  • a plurality in the foregoing embodiment refers to at least two.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
EP21914524.0A 2020-12-31 2021-12-29 Middle drum assembly of building drum, building drum, and method for replacing middle drum block of middle drum assembly Pending EP4272941A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011638978.2A CN114683598A (zh) 2020-12-31 2020-12-31 成型鼓的中鼓组件、成型鼓和中鼓组件的中鼓块更换方法
PCT/CN2021/142573 WO2022143792A1 (zh) 2020-12-31 2021-12-29 成型鼓的中鼓组件、成型鼓和中鼓组件的中鼓块更换方法

Publications (1)

Publication Number Publication Date
EP4272941A1 true EP4272941A1 (en) 2023-11-08

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ID=82136046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21914524.0A Pending EP4272941A1 (en) 2020-12-31 2021-12-29 Middle drum assembly of building drum, building drum, and method for replacing middle drum block of middle drum assembly

Country Status (5)

Country Link
EP (1) EP4272941A1 (zh)
JP (1) JP2024503362A (zh)
KR (1) KR20230142461A (zh)
CN (1) CN114683598A (zh)
WO (1) WO2022143792A1 (zh)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2013114439A (ru) * 2010-09-02 2014-10-10 Дейвиан Энтерпрайзиз, Ллк Фиксирующая проставка и способ ее установки
WO2014209367A1 (en) * 2013-06-28 2014-12-31 Compagnie Generale Des Etablissements Michelin Tire mold with improved durability
CN208343502U (zh) * 2018-06-15 2019-01-08 天津赛象机电工程有限公司 带束层贴合鼓鼓板快换装置
CN209426210U (zh) * 2018-12-20 2019-09-24 天津赛象科技股份有限公司 瓦块快换带束层传递环
CN211390234U (zh) * 2019-07-31 2020-09-01 萨驰华辰机械(苏州)有限公司 叠加瓦块组件及带束鼓系统
CN211138203U (zh) * 2019-10-22 2020-07-31 青岛铭达高科轮胎科技有限公司 一种带束层鼓的快换瓦块装置
CN214395529U (zh) * 2020-12-31 2021-10-15 软控股份有限公司 成型鼓的中鼓组件和成型鼓

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KR20230142461A (ko) 2023-10-11
JP2024503362A (ja) 2024-01-25
CN114683598A (zh) 2022-07-01
WO2022143792A1 (zh) 2022-07-07

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